Single Permanent Magnet Co-Axial Loudspeakers

Dimitrov D. Single Permanent Magnet Co-Axial Loudspeakers. In: AES Convention 134. Audio Engineering Society; 2013. Paper 8847. Available from: https://aes.org/publications/elibrary-page/?id=16748

@inproceedings{Dimitrov2013_16748,
  author = {Dimitrov, Dimitar},
  title = {{Single Permanent Magnet Co-Axial Loudspeakers}},
  booktitle = {AES Convention 134},
  note = {Paper 8847},
  year = {2013},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16748}
}

TY  - CPAPER
TI  - Single Permanent Magnet Co-Axial Loudspeakers
AU  - Dimitrov, Dimitar
T2  - AES Convention 134
M1  - Paper 8847
PY  - 2013
DA  - 2013/05/06
UR  - https://aes.org/publications/elibrary-page/?id=16748
PB  - Audio Engineering Society
LA  - en
AB  - Co-axial loudspeakers are designed with a single ring permanent magnetic structure assuring dual flux path for the two voice coil gaps. Internal magnet is used in two realizations with parallel flux division at both its diameters. These two varieties are convenient for Nd magnets and one of them has its local internal flux path crossing two gaps in series for dual membrane compression driver implementation. Another realization uses an external permanent magnetic structure with series flux through the gaps. Proposed co-axial loudspeaker types are very compact, simple, and lightweight. They all can use “Stepped Gap” designs for their low frequency voice coils. Comparative measurements with conventional co-axial loudspeakers reveal competitive performance with much reduced weight and production cost.
ER  -